Orphan Drugs Among 2015's Top 10 Best-Selling Medications By: Benzinga via Benzinga January 18, 2017 at 10:40 AM EST Orphan drugs, drugs intended to prevent, diagnose or treat rare diseases/disorders, are huge sellers for the pharmaceutical ... Read More >> Related Stocks: AbbVie Amgen Biogen Idec Celgene Corp Gilead Sciences Pfizer Sanofi-Aventis S.A. ADR Teva Pharmaceutical Industries ADR